65943673 has 2 divisors, whose sum is σ = 65943674. Its totient is φ = 65943672.

The previous prime is 65943671. The next prime is 65943677. The reversal of 65943673 is 37634956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65804544 + 139129 = 8112^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 65943673 - 2¹ = 65943671 is a prime.

Together with 65943671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (65943671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32971836 + 32971837.

It is an arithmetic number, because the mean of its divisors is an integer number (32971837).

Almost surely, 2^65943673 is an apocalyptic number.

It is an amenable number.

65943673 is a deficient number, since it is larger than the sum of its proper divisors (1).

65943673 is an equidigital number, since it uses as much as digits as its factorization.

65943673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 43.

The square root of 65943673 is about 8120.5709774621. The cubic root of 65943673 is about 404.0090042270.

The spelling of 65943673 in words is "sixty-five million, nine hundred forty-three thousand, six hundred seventy-three".